Home / 20,509.14-28,302.64-11,077.70

Finding the Fourth Proportional to 20,509.14, 28,302.64 and 11,077.70

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Solution

The fourth proportional to 20,509.14, 28,302.64 and 11,077.70 is: 15,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.14 : 28,302.64 = 11,077.70 : x
  2. Step 2: Convert to fraction form
    20,509.14/28,302.64 = 11,077.70/x
  3. Step 3: Cross multiply
    20,509.14x = 28,302.64 × 11,077.70
  4. Step 4: Simplify right side
    20,509.14x = 313,528,198.19
  5. Step 5: Solve for x
    x = 313,528,198.19/20,509.14
  6. Step 6: Final answer
    x = 15,287.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.